www.pudn.com > 3DEDITOR.rar > PICTURE.CPP
#include "stdafx.h"
#include
#include
#include
#include
#include "jpeg.h"
int sizes[]={ 1,2,4,8,16,32,64,128,256 };
int nsizes=8;
int byteRGB::Intensity(void)
{
return (int)(r*299/1000 + g*587/1000 + b*114/1000);
}
void byteRGB::ToYIQ(void)
{
unsigned char y,i,q;
y=(299*r+587*g+114*b)/1000;
i=(596*r-275*g-321*b)/1192+127;
q=(212*r-523*g+311*b)/1046+127;
y=((int)y-127)*2/3+127;
i=((int)i-127)*2/3+127;
q=((int)q-127)*2/3+127;
r=y;
g=i;
b=q;
}
void byteRGB::FromYIQ(void)
{
unsigned char y,i,q;
int u,I,Q;
I=((int)g-127)*166/127;
Q=((int)b-127)*148/127;
u=(int)r+(956*I+621*Q)/1000;
u=(u-127)*3/2+127;
y=u<0?0:u>255?255:u;
u=(int)r-(272*I+647*Q)/1000;
u=(u-127)*3/2+127;
i=u<0?0:u>255?255:u;
u=(int)r+(1703*Q-1106*I)/1000;
u=(u-127)*3/2+127;
q=u<0?0:u>255?255:u;
r=y;
g=i;
b=q;
}
void picture::ErasePicture(char c)
{
int a;
for( a=0;a=0;a-- )
{
fread((char *)buf[a],sx,3,fp);
int z=0,p=0;
for( ;z=0;a-- )
{
for( b=0;bsx)
break;
if (isy)
break;
if (i=0;a-- )
fread( (char *)buf[a],wx,1,fp );
fclose(fp);
build_icon();
return 1;
}
return 0;
}
int picture::LoadJPG(char *name)
{
FreePicture();
JPEGDATA data;
FILE *fp;
fp=fopen(name,"rb");
if (fp)
{
memset(&data,0,sizeof(JPEGDATA));
data.input_file = fp;
JpegInfo(&data);
fclose(fp);
if (data.components==3 || data.components==1)
{
bytespixel=data.components;
if (bytespixel==3)
CreatePicture24(data.width,data.height);
else CreatePicture8(data.width,data.height,0);
fp=fopen(name,"rb");
data.ptr = buf[0];
data.input_file = fp;
data.hWnd = 0;
data.ProgressMsg = 0;
JpegRead(&data);
fclose(fp);
if (data.status==0)
{
build_icon();
return 1;
}
else FreePicture();
}
}
return 0;
}
void picture::ToYIQ()
{
if (bytespixel!=3)
return ;
int x,y;
byteRGB *rgb;
for( y=0;yToYIQ();
}
}
void picture::FromYIQ()
{
if (bytespixel!=3)
return ;
int x,y;
byteRGB *rgb;
for( y=0;yFromYIQ();
}
}
void cor_inter(float xi[3], float yi[3], float c[3][3], float x, float y, byteRGB *rgb)
{
int a;
float v[3][2],m[3][2],n[3];
for( a=0;a<3;a++ )
{
v[a][0]=xi[a];
v[a][1]=yi[a];
}
m[0][0]=x-v[0][0];
m[0][1]=y-v[0][1];
m[1][0]=v[2][0]-v[0][0];
m[1][1]=v[2][1]-v[0][1];
m[2][0]=v[1][0]-v[0][0];
m[2][1]=v[1][1]-v[0][1];
n[0]=m[1][0]*m[2][1]-m[1][1]*m[2][0];
n[1]=m[0][0]*m[2][1]-m[0][1]*m[2][0];
n[2]=m[0][0]*m[1][1]-m[0][1]*m[1][0];
for( a=0;a<3;a++ )
*((&rgb->r)+a)=(unsigned char)(((c[2][a]-c[0][a])*n[1]-(c[1][a]-c[0][a])*n[2])/n[0]+c[0][a]);
}
void picture::GetPixel(int x,int y,byteRGB *rgb)
{
if (buf==0)
return;
x=(x%sx);
y=(y%sy);
if(x<0)
x=sx+x;
if(y<0)
y=sy+y;
if (bytespixel==3)
*rgb=*((byteRGB *)&buf[y][x*3]);
else if (pal)
*rgb=pal[buf[y][x]];
else rgb->r=rgb->g=rgb->b=buf[y][x];
}
#define ROUND(x) ((x)>=0?((int)(x)):((int)(x)-1))
void picture::GetPixel(float x, float y, byteRGB * rgb,int textinterp)
{
if (textinterp==0)
{
GetPixel(ROUND(x), ROUND(y), rgb);
return;
}
float xi[3], yi[3];
float cor[3][3];
int ix=ROUND(x),iy=ROUND(y);
byteRGB rgbt;
if (buf==0)
return;
GetPixel(ix, iy, &rgbt);
cor[2][0]=rgbt.r;
cor[2][1]=rgbt.g;
cor[2][2]=rgbt.b;
GetPixel(ix, iy+1, &rgbt);
cor[2][0]+=rgbt.r;
cor[2][1]+=rgbt.g;
cor[2][2]+=rgbt.b;
GetPixel(ix+1, iy, &rgbt);
cor[2][0]+=rgbt.r;
cor[2][1]+=rgbt.g;
cor[2][2]+=rgbt.b;
GetPixel(ix+1, iy+1, &rgbt);
cor[2][0]+=rgbt.r;
cor[2][1]+=rgbt.g;
cor[2][2]+=rgbt.b;
cor[2][0]/=4;
cor[2][1]/=4;
cor[2][2]/=4;
if((y-iy)>(ix+1-x))
{
xi[0]=(float)(ix+1);
yi[0]=(float)(iy+1);
}
else
{
xi[0]=(float)(ix);
yi[0]=(float)(iy);
}
if((x-ix)>(y-iy))
{
xi[1]=(float)(ix+1);
yi[1]=(float)(iy);
}
else
{
xi[1]=(float)(ix);
yi[1]=(float)(iy+1);
}
GetPixel((int)xi[0], (int)yi[0], &rgbt);
cor[0][0]=rgbt.r;
cor[0][1]=rgbt.g;
cor[0][2]=rgbt.b;
GetPixel((int)xi[1], (int)yi[1], &rgbt);
cor[1][0]=rgbt.r;
cor[1][1]=rgbt.g;
cor[1][2]=rgbt.b;
xi[2]=ix+0.5f;
yi[2]=iy+0.5f;
cor_inter(xi, yi, cor, x, y, rgb);
}